Paper-bag machine.



No. 634,099. Pafenfed'oc'f; s, i899.

n. M. UHLMANN. PAPER BAG Mamma.

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na.. l634,099. Patent-ed oct. s, |899.

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PPER BG'HCHINE.

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No. 634,099. Patented Oct. 3, |899.

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P APER BAE MACHINE.

(Application lnd Iuly 22, 1898.-) (Ho Model.) 7 Sheets-Sheet 3.

Nvo. 634,99. k Patented Get. 3, |899.4

R. M. UHLMANN.

PAPER BAG MACHINE.

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No.4 634,099. Patentad 0st. 3, |899.

H. M. UHLMANN. PAPER BAG MACHINE.

(Lpplicstion Mod July 22, 1898,) (lo Model.) A 7 Shasta-Shen 5.

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No. 634,099. Patemd om. a, |399.

R. M; UHLMANN. K l w PAPER BAG MACHINE. (Appximinn .med .my '22, 189e.) {No.llodel.) 1 Sheets-Sheet 7.

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y and operated to act uponv the folded bottom UNITED "Srn'rns .PATENT OFFICE.

BY MESNE ASSIGNMENTS, TO THE HARTFORD, CONNECTICT.

EASTERN PAPER BAG COMPANY, or

PAPER-BAG MAcHiNE.

SPECIFICATION" forming part of Letters Patent No. 634,099, dated October 3, 1899.

.nppnctnop'iea July 22,1898.

To (all, whom, zit' may concern:

Be itknown that I, RICHARD MAX UHL- MANN, of the city and county of Philadelphia, State of Pennsylvania, have invented an Improvement in Paper-Bag Machines, of which the following is a specification.

My invention relates to paper-bag machines; and it consists of certain improvements which are fully s et'forth in the following specification and are shown in the accompanying drawings.

More particularly my invention relates to the devices for folding the bottom of a paper tube into the required folds for the formation of the bag-bottom before the final folds which complete the formation of the bottom are made and is especiallydesigned for the making of satchel square bottoms on bellows side-fold tubes. Y

In Letters Patent of William B. Purvis, Nos. 519,348 and 519,349, dated May 8, 1894, No. 530,650, dated December 1l, 1894, and No.

' 578,361, dated March 9, 1897, is described a paper-bag machine in which, the bottom folds are formed by reciprocating suction-formera composed of .sections which during their reciprocations move apart and vary the augular relations of their'sections to break or crease the paper at the end of the tube, which adheres to their suction-faces, into the desired folds. In that machine the suction-formers are each composed of two sections hinged' together and operated by means of cams acting on the respective sections to impart the desired movements. A part of my improvements relates particularly to the devices for imparting these movements to the sections of the suction formers as they reciprocate, whereby a more certain, positive, and -uniform action is obtained and the creasing ofv the bagbottom is more perfectly Vaccomplished. This'part of my invention embraces the employment of. a single cam for i'mpartin g the required movements to both sections of each" former instead of a separate cam for In the' Patent No. 578,361 referred to. are vshown folding-.plates arranged lSerial. No. 686,564. (No model.) y

tion of their operations inthe forming there- 5o of, and a partof'my invention relates to improvements in the construction and mode of voperation of these folding devices. l

In the accompanying drawings, Figure 1 is 'a plan view of .the'bottom-forming devices of 55 a'paper-bag machine embodying my invention.- Fig.'2.isja longitudinal vertical sectional view of the same on the line a; of Fig. 1. .Fig 2 is 'aview similar to Fig. 2, looking toward the opposite side of the machine. 6o Fig. 3 is a side elevation of the reciprocating suction-formers and their carriage. Fig. 4 is a front view of the same with the former-sections opened. Fig. 5 is a transverse sectional View of a portion of the same on the line y y of Fig. 4.- Fig. 6 is an enlarged perspective view of the pedestal and frame of thereciprocating carrier. Fig'. 7 is a similar view of the stationary clamp-plate thereof. Fig. 8 is a similar view of one of the detached side 7o cheeks of the carrier.V Fig. '9 is a similar view of the movable clamp-plate. Figs. 10 and l1 are similar views of the sections of the suction-former. Figs. 12 to 16 are detail l perspective views of portions of the end-folding wings and in echanismfor operating them. Figs. 17 and 18 are sectional views of the suction-formers, showing different positions occupied by them; and Figs. 19 to 23 are per-Y spective views ofthe bag-section, showing 8o successive steps in the formation of the bottom folds thereon.

' In the drawings I have shown onlyso much of a paper-bag machine as is necessary for an understanding of my`invention; but it will be understood that the bottom-folding devices shown may be used with suitabletube forming, cutting, and feeding devices for making the tube-sections and feeding them to the bottom-formels and with final folding and 9o pasting devices for taking the tube-sections from the bottom-fermiers and applying the paste and final folds thereto.. Such devices are Well known to those skilled in the art and are illustrated, e. g., in the Purvis Patent No. 519,348, before referred to.

50 isa reciprocating carriage guided on and assist the suction-formels at the compleguides 52 of a bed-frame 51, carried by the main frame of the machine and rcciprocated in any convenient manner, as by a suitablyoperated lever 54,.hinged thereto at 55.

v53 is a pedestal detachably carried by the` carriage 50 and carrying the suction-formers 61.

Suitable devices are employed to clamp and release the paper tube while carried by the carriage. As shown, these devices are as follows:

95 isatransverse plate carried by the pedestal 53 and projecting forward at a slight distance therefrom to permit the tube-sections to pass between.

96 is a clamp-plate below the plate 95, pivoted at its rear, as at 100, and provided with a controller-arm 97, carrying a shoe 98, which runs on a longitudinal rod 99. As the carriage moves forward the frictional resistance imposed by the rod 99 on the shoe 98 rocks the arm 97 and closes the clamp 96 and holds it shut; but the instant the carrier starts backward after the completion of its forward movement the frictional resistance operates the controller in the opposite .direction and opens the clamp 96 to release the bag and maintains the clamp open until the next bagsection is introduced and the forward movement is commenced.

The formers 60 and 61 are carried by the pedestal 53 and consist each of two hollow sections having perforated faces and adapted as the carrier reciprocates to move apart and vary the angular relations of their sections.

62 62 are cheek plates or extensions carried by the pedestal 53, one at each end. The inner section 63 of the former 60 has an end frame 65, which is pivoted at 104 tothe side cheek 62. The outer section 64 is carried by an arm 66, hinged at 67 to the end frame 65. rlhe outer section 64 fits at its rear within the front of the inner section 63, the curved back 105 of the latter fitting over the curved back 106 of the former, so that the two sections may rock independently upon their respective pivots or axes 104 and 67, collapsing upon one another at the back. The former 61 is similarly constructed of two collapsible sections 63 64, the section 63 being hinged at 104 to the side frame and the outer section 64 being hinged through the arm 66 to the side frame at 67, and the curved back 105 of the inner section fitting over the curved back 106 of the section 641.l

Suction is created in the' hollow suctionformers in any convenient manner, preferably through a passage 125 in the pedestal 53, communicating through passage-ways 127 127 in the side cheeks 62 62, respectively, with openings atthe pivots 107 107 in the frames 65 65.

So far as the apparatus has been described it forms no part of my invention and may be modified in any Way desired without affecting it. The invention, so far as this portion of it is concerned, relates solely to the mechant A l 634,099

ism for moving the sections'of the suction# formers during their reciprocations.

107 is a gear-wheel carried on the pivot 104 of the inner section 63.

108 is a gear-wheel meshing with the gear 107 and carried on a stud 109, journaled in the side cheek 62.

110 is an arm carried by the stud 109 and provided on its end with a roller 111.

112 is a gear-Wheel carried by the arm 66 of the outer section 64 at its pivot 67, and 113 is an intermediate gear on the frame 65 between the gears 107 and 112.

114.is a roller on an arm 115, carried by the end frame 65 of the section 63.

Similar devices are employed at the opposite side for operating the sections 63 64.

107 is the gear-wheel carried by the frame 65 at its pivot 104.

108 is the gear-Wheel on the stud 109, journaled in the side cheek 62 and carrying the arm 110, provided on its end with the roller 111.

112 is the gear-wheel carried by the arm 66 at its pivotv67.

113 is the intermediate gear between the gears 107 and 112, and 115 is the arm on the end frame 65, carrying the roller 114.

116 116 are cams (shown as cam-slots in the side plates 117 117) on which the rollers 111114 and 111 114, respectively, run.

The cam-slot 116, which operates the upper former 60, has a lower portion 118, an upper portion 119, and an intermediate upwardlyinclined connecting portion 120, while the cam-slot 116,which operates thelower former 61, is oppositely disposed, having an upper portion 118, alower portion 119, and an intermediate connecting portion 120.

Then the carrier is in its rearmost position, as shown in Fig. 2, the rollers 111 and 111 are in the rear ends of the slot portions 118 118, and the rollers 114 114 are in the front ends thereof adjacent to theinclined portions 120 120. At this moment the paper tube, in the condition shown in Fig. 19, is fed forward by the usual feed-rolls (not shown) between the clamp-plates 95 96 until its advanced end lies between the perforatedv faces of the suction-formers 60 61. As the carrier moves forward the plate 96 is clamped upon the paper in the manner heretofore described, and as the rollers 114 114 move forward in the inclined portions 120 120 the inner sections 63 63 are rocked on their pivots 104 104 through approximately ninety degrees or until they are brought into substantially a vertical plane with reference to one another, as shown in Fig. 18. During this portion of the movement of the carrier the angular position of the outer sections 64 64 is not changed, as the rollers 1,11 111 which operate them are traveling over the horizontal portions 118 118 of the cams. At this moment, therefore, the

sections 64 64 occupy a substantially rectangular position with reference to the scc- IOO IIO

tions 63 63, as shown in Fig. 18 but as the carrier continues on its forward movement the rollers 114 114iL move forward over the cam portions 119 119 without affecting the angular positions of the sections 63 6B, while the rollers 111 111 travel on the inclined portions 120 120a and rock the gears 108 108, transmitting power through the gears 107 113 and 107 113 to the gears 112 112a and rocking the outer sections 64 64 on their pivots 67 67a until they are opened out into a sub stantially vertical position, as shown in Fig.

' 4. On the return of the carrier these motions are reversed.

In Fig. 17 the sections are shown in an intei-mediate position before the inner sections 63 63fare moved fully open. The tube-section, which is fed to the carrier in the condition shown in Fig. 19, with its end lying between the suction-formers,is first broughtinto the partially-opened 'position shown in Fig. 20, when the formers assume the positions shown in Fig. 17, is then brought into the condition shown in Fig. 21, when the formers are in the positions shown in Fig. 18, and is finally opened out into the condition shown in Fig. 22, when the sections are fully opened, as

shown in Fig.y 4. It will be observed that a single camV 116 or 116a operates both sections of its corresponding former, rocking each sec-1 tion independently on its axis, andv that certain and positivemovements are imparted. In the construction shown the movement is imparted directly to the inner section through the arm 11'5, (1153,) while the movement is imparted to the outer section by the rocking arm 110 (1102) throughy the intermediate gearing. The use of a single cam for each former instead of two cams affords a simpler and more efficient construction.

To assist the formers in flattening out the bottom and bringing it into the condition shown in Fig. 22, I employ movable flattening wings or plates, which at the end of the forward movement of the formers are positively folded down upon the perforated faces thereof. Such flattening-plaies are shown in the Purvis Patent No. 578,361, before referred to, and my present invention is an improvement in the arrangement and mode of operation thereof, whereby a more perfect and positive action is obtained.

142 142 are the atteningplates, hinged on vertical aXe's to arms 143 on rods 144 144, guided in a transverse frame 145 in the front of the machine and connected at the rear with a bar 146, operated by arms 147 147 of a rocky shaft 148, journaled in brackets 101 101.

149 isa rod hinged to one of the arms 147 carriage to strike the stop 185aud impart a slight backward movement to the rod 149, thus rocking the shaft 148 and projecting the rods 144 144.

191 is a yielding frame having an extension 187, guided in a frame 145 and provided with arms 188, acting as yielding bearings or fulcra for the plates 142 142, adjacent to their hingepoints with the rods 144.

189 is a spring normally pressing the frame 191forward and permitting it to yield.

190 190 are springs normally retracting the plates 142 142 and maintaining them in contact with the arms 188, as shown in Fig. 1.

At the end of the forward movement of the formers 61 (which are then opened, as shown in Fig. 4) they strike the outer edges of the plates 142 142 (which then occupy the positions shown in Fig. 1) and press the yielding rods 144 back, rocking the plates 142 142 upon their hinges about the arms 188 as fulcra, and folding the plates down with a positive action upon the opened paper drawn out into the position shown in Fig. 22 by the opened sections of the suction-formers. As the formers move forward, pressing against the plates, the frame 191 yields, so that a certain and positive pressure of the foldingplates 142 142 is obtained upon the opened end of the paper tube, and the folds produced by the opening of the former-sections are perfectly formed and defined. This backward movement of vthe rods 144 144 moves the rod 149 rearwardly, so that on the return movement of the carriage the projection or jaw 186 thereon will strike the stop 185 and restore the rods 144 144 and plates 142 142 to normalposition, as shown in Fig. 1, the yielding frame 191 returning under the action of the spring 189. At the end of the forward movement of the formers the paper tube is in the condition shown in Fig. 22, and as the car- -riage starts to move back the clamp is released and the partially-folded bag is removed by the usual strippingV devices (not shown) and reaches the final folding and pasting devices in the condition shown in Fig. 23, when the paste is applied and the final folds are formed in the manner well known.

It-is to be understood that auxiliary means may be employed in conjunction with the suction -formers for assisting in the formation yof the bottom folds; but such devices have ICO IIO

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and varying their angular relations as the former reciprocates.

2. In a paper-bag in achine, the combination of a suction-former consisting of hinged sections, a cam, means controlled by the cam for rocking one of said sections on its hinge or axis, and means also controlled .by said cam for independently rocking `the other section on its hinge or axis.

3. In a paper-bag machine, the combination of a suction-former consisting of hinged sections, a cam, means controlled by the cam for rocking one of said sections on its hinge or axis, and means also controlled by said cam forl independently rocking the other section v on its hinge or axis, and embracing a rocking arm operated by said cam and gearing between said rocking arm and said section.

4. In a paper-bag machine, the combination ofareciprocating frame, a suction-former carried thereby and consisting of hinged sections, a cam arranged adjacent to said formers, a projection or extension carried by the inner section and acted upon by said cam to rock said section on its axis, a rocking arm carried 'by said frame and acted upon by said cam to rock said arm, and gearing between said rocking arm and the outer section.-

5. In a paper-bag machine, the combination of a reciprocating frame, a pair of suctionformers carried thereby and each consisting of hinged sections, a cam arranged adjacent to said formers on each side, a projection or extension carried by each of the inner sections and acted upon by the adjacent cam to rock said sections on their axes, rocking arms carried by said frame and acted upon each by its adjacent cam to rock said arms, and gearing between each of said rocking arms and the corresponding outer section. p

6. In apaper-bag machine, the combination of a reciprocating frame, a suction-former carried thereby and consisting of hinged sections, a projection carried by one section, a rocking arm carried by the frame, gearing between the rocking arm and the other section, and cam devices adapted to act upon said projection and rocking arm and rock said sections on their axes.

7. In apaper-bag machine, the combination of a reciprocating frame, a suction-former carried thereby and consisting of hinged sections, a projection carried by one section, a rocking arm carried by the carrier, a gear carried by said rocking arm, a gear carried by the other section, intermediate gearing between said gears, and cam devices adapted to act upon said projection and rocking arm and rock said sections on their axes.

8. In apaper-bag machine, the combination of the reciprocating carrier, of the suctionformer carried thereby, consisting of hinged sections, a projection carried by the inner section, a rocking arm 110 carried by the reciprocating carrier and provided with a gear 108, a gear107 on the axis of the inner section engaging therewith, a" gear 112 carried by the outensection, an intermediate gear 113 on the frame of the inner section between the gears 107 and 112, and means to actuate the projection and rocking arm to rock the sections independently in their axes.

9. In a paper-bag machine, the combination with reciprocating suction-formels, adapted to open out, of folding wings or plates located adjacent to the faces of said formers opened out and adapted to make contact therewith, a yielding frame carrying said folding-wings, and adapted to be moved when the opened faces of the formers bear upon said folding- Wings, a rod or extension carried by said frame, and a stop moving with the reciprocating suction-formers to actuate said rod or extension and restore said yielding frame and wings to operative position upon the return of the suction-formels.

10. In a paper-bag machine,the combination with reciprocating suction-formers, adapted to open out, of folding wings or plates located adjacent to the faces of said formers when opened out and adapted to make contact therewith, a yielding frame to which said folding-wings are hinged and adapted to be moved when the opened faces of the formers bear upon said folding-wings, yielding arms or extensions located in the rear of said folding-wings and adapted to act as yielding fulcra therefor, a rod or extension carried by said frame, and a stop moving with the reciprocating suction-formels to actuate said rod or extension and restore said yielding frame and wings to operative position upon the return of the suction-formers.

11. In apaper-bagmachine,the combination with reciprocating suction-formers, adapted to open out, of the yielding rods 144, the folding Wings or plates 142, 142 hinged thereto, the rocking bar 146, with which said rods 144 are operatively connected, the rod 149 connected with said rocking frame and provided with a stop 185, and the extension or stop 186 carried with the-reciprocating formers and adapted to strike the stop 185 and actuate the rod to restore the folding-wings to normal position.

12. In a paper-bag machine,the combination with reciprocating suction-formers, adapted to open out, of the yielding rods 144, the folding wings or plates 142, 142 hinged thereto, the

rocking bar 146, with which said rods 144 are operatively connected, the rod 149 connected with said rocking bar and provided with a stop 185, the extension or stop 186 carried with the reciprocating formers and adapted to strike the stop 185 and actuate the rod to restore the folding-wings to normal position,

and the yielding arms 188 located in the rear of the plates k142 and acting as yielding fulcra therefor. n

13. In a paper-bag machine,the combination with Vreciprocating suction-formels adapted to open out, of folding Wings or plates adapted to fold down upon the faces of said formers, when they may make contact therewith, a

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yielding frame carrying said plates or wings', and means controlled by the reciprocating suction-formers to actuate said yielding frame and restore it and the folding Wings oriplates to normalposition upon the backward recipv l acting as yielding fulcra therefor, and means controlled by the reciprocating suetion-formi5 ers to actuate said yielding frame and restore it and the folding Wings or plates to normal position upon the/backward reciprocation of said suction-formelsl In testimony of Whiohinvention I hereunto zo Set rny hand. Y i

` R. MAX UI-ILMANN.

Witnesses:

I. THOMPSON; i ERNEST HOWARD HUNTER. 

